178 SYKPHID.i:. 



yellowish toraentura and concolorous pubescence, leaving antennal 

 prominence bare of tomentum and with long black pubescence, 

 extreme anterior margin brown. Lower part of head and a broad 

 median stripe on face also practically bare ; former not descending 

 below level of eyes in absolute profile, but projected very consider- 

 ably forwards and downwards in a prominent blunt cone about as 

 far distally as tip of antennae. Antennae with first two joints black, 

 3rd dark brown, arista brown, subplumose on less than basal half. 

 Occiput yellowish-grey ; upper margin with long brownish-yellow 

 hairs, with some black liairs intermixed ; lower margin with 

 yellowish pubescence ; side margins with the pubescence very 

 short. In 5 , face at level of antennae about one-third of head ; 

 frons and face gradually widening above and below respectively ; 

 former black but broadly greyish-tomentose at sides on 



Fig. 37. — Eristalis simulaius, sp. iiov., bind leg, c? . 



lower part and across the middle, the whole frons with black 

 hairs ; rest as in S . Thorax blackish, with a barely obvious 

 greyish band along suture; anterior margin with a tinge of 

 grevness ; sides of thorax grey, scutellura brownish-yellow ; pubes- 

 cence of thorax and sides yellowish-grey ; ttiat on dorsum with 

 black hairs freely intermixed; that on scutellum all black except 

 for a fringe of long pale yellow hairs on hind margin. Abdomen : 

 1st segmeiit ash-grey with pale yellow pubescence ; rest of 

 abdomen black with yellow marks ; 2nd segment with a pair of 

 transverse yellowish spots across middle, distinctly separated in 

 the middle line, with parallel edges, suddenly widened towards 

 side margins, where thev encroach distinctly on the anterior 

 margin but do not extend to liiiid margin ; 3rd segment with a 

 pair of transverse, narrow, yellowish spots across middle, touching 

 side margins ; hind margins of 2nd, 3rd and 4th segments 

 narrowly brownish-yellow, quite bare. Pubescence generally 



